A Monograph of the Fresh-water Polyzoa, Including All the Known Species, Both British and ForeignRay Society, 1856 - 119 páginas |
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Página 7
... Retractor muscle . Let us imagine an alimentary canal , consisting of œsophagus , stomach , and intestine , to be furnished at its origin with long ciliated tentacula , and to have a single nervous ganglion situated on one side of the ...
... Retractor muscle . Let us imagine an alimentary canal , consisting of œsophagus , stomach , and intestine , to be furnished at its origin with long ciliated tentacula , and to have a single nervous ganglion situated on one side of the ...
Página 20
... Retractor muscle . o . Lophophore . The tentacula are connected to one another at their base by a membrane which adheres to their back , extending forwards for about one third of their length , and constituting a cup . This membrane ...
... Retractor muscle . o . Lophophore . The tentacula are connected to one another at their base by a membrane which adheres to their back , extending forwards for about one third of their length , and constituting a cup . This membrane ...
Página 21
... retractor fibres are obviously homologous with the great retractor muscles of the others . The mouth , which occupies its normal position in the body of the lophophore , opens into an œsophagus , which after a short course terminates in ...
... retractor fibres are obviously homologous with the great retractor muscles of the others . The mouth , which occupies its normal position in the body of the lophophore , opens into an œsophagus , which after a short course terminates in ...
Página 24
... Retractor Muscles of the Polypide . These , which are the largest and most powerful muscles of the animal , consist of two fasciculi ( Pl . IV , fig . 4 ; V , fig . 5 ; IX , fig . 7 , n ) , which arise far back from the inner surface of ...
... Retractor Muscles of the Polypide . These , which are the largest and most powerful muscles of the animal , consist of two fasciculi ( Pl . IV , fig . 4 ; V , fig . 5 ; IX , fig . 7 , n ) , which arise far back from the inner surface of ...
Página 26
... have been unable to detect in them the strić , or see them breaking into the discs , which may be observed in the great retractors of the polypide . ( 8. ) Parietal Muscles . In the description of 26 MUSCULAR SYSTEM .
... have been unable to detect in them the strić , or see them breaking into the discs , which may be observed in the great retractors of the polypide . ( 8. ) Parietal Muscles . In the description of 26 MUSCULAR SYSTEM .
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Términos y frases comunes
adherent Alcyonella Alcyonella fungosa Alcyonella stagnorum alimentary canal Allman anatomy animal annulus Ascidian attached become Beneden Bowerbankia Brachiopoda branches branchial sac Brit Brux campanulata cavity cell character cilia cœnćcium crescentic Cristatella Cristatella mucedo d'eau douce described Difflugia disc distinct Dumortier ectocyst embryo endocyst epistome exserted external fibres flabellum fluid fresh-water Polyzoa funiculus ganglion genera genus Gervais hćmal Hancock hippocrepian Hist homologous intestine invaginated l'Acad Lamarck layer Leidy Linnćus lophophore Lophopus crystallinus margin Mém membrane memoir Meyen mouth Müller Naisa naturalists observed œsophagus organ orifice Original figures ovary ovum Paludicella parieto-vaginal muscles peculiar Pedicellina perigastric space Plumatella repens Polype ŕ Panache polypide Polyzoon portion present Raspail respiratory retraction retractor retractor muscles Rösel seen septa side species specimens statoblasts stomach structure surface tentacles tentacula tentacular crown tentacular sheath thoracic chamber transparent transverse Trembley tubes Tubularia repens tunic Tunicata Urnatella walls Zooph Zoophytes